The view data_type_privileges
identifies all data type descriptors that the current user has
access to, by way of being the owner of the described object or
having some privilege for it. A data type descriptor is generated
whenever a data type is used in the definition of a table column,
a domain, or a function (as parameter or return type) and stores
some information about how the data type is used in that instance
(for example, the declared maximum length, if applicable). Each
data type descriptor is assigned an arbitrary identifier that is
unique among the data type descriptor identifiers assigned for
one object (table, domain, function). This view is probably not
useful for applications, but it is used to define some other
views in the information schema.

Table 34-17. data_type_privileges Columns

Name

Data Type

Description

object_catalog

sql_identifier

Name of the database that contains the described
object (always the current database)

object_schema

sql_identifier

Name of the schema that contains the described
object

object_name

sql_identifier

Name of the described object

object_type

character_data

The type of the described object: one of TABLE (the data type descriptor pertains
to a column of that table), DOMAIN (the data type descriptors pertains
to that domain), ROUTINE (the
data type descriptor pertains to a parameter or the
return data type of that function).

dtd_identifier

sql_identifier

The identifier of the data type descriptor, which is
unique among the data type descriptors for that same
object.

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